Discussion
A virtual link in an avionics full duplex switched Ethernet network is
Answer: D
Correct answer: A logical path to defined receivers
A virtual link is a configured unidirectional route from one transmitting end system to a defined set of receivers, with a guaranteed maximum bandwidth. It exists in the switches' configuration tables rather than in any cable.
The concept is what makes a switched network deterministic: because every link's traffic is bounded in advance and the switches police it, the worst-case delay across the network can be computed and demonstrated. Several virtual links share the same physical wiring, which is precisely the point.
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